Estuary name Hopkins River Estuary
CMA Glenelg Hopkins CMA

The Hopkins River Estuary is a wave dominated, seasonally closed, salt wedge estuary. The estuary is approximately 9.5km long, covers an area of approximately 1.6 km2 and has a total volume of 3,100 ML. It is confined by a rock walled canyon for much of its length, and is formed in a drowned river valley. In geological terms, the current form of the Hopkins River estuary is relatively young, forming around 6,000 years ago.

Estuary Values
Estuary Threats
Data Site observations
Status Active
Monitor group Hopkins River EstuaryWatchers



Site details Options

H1 Site one (Hopkins River Bridge)

Active Physico-Chemical 01-01-2000 - 17-03-2023
Ocean side of bridge, between the 29th and 30th post (counting from the western side of bridge) infront of the fishing ruler.
Observations 148

H2 Site two (Riverboat Cruise Pontoon)

Active Physico-Chemical 11-07-2010 - 17-03-2023
Pontoon located on the ocean side of the Riverboat. This pontoon extends out into the river beyond the other pontoons.
Observations 146

H3 Site three (Mahoneys Road)

Active Physico-Chemical N/A - 17-03-2023
Fishing pontoon located on the oceanside of the boat ramp. Monitoring is conducted off the end of the pontoon.
Observations 149

H4 Site four (Jubilee Park)

Active Physico-Chemical 11-08-2010 - 17-03-2023
End of the floating pontoon located closest to the ocean, opposite the Hopkins River Caravan Park/ Jubilee Park.
Observations 145

HGB Hopkins River Water Level Gauge Board

Active Gauge Board
This sites water level monitoring gauge board is attached to the Simpson Street boat ramp.

HMC Hopkins River Mouth Condition Observation Site

Active Mouth Condition 29-05-2010 - 16-10-2022

Site changed in September 2019 to Fluker Post WEPS1.

Previous location became overgrown.

Observations 150

Hp1 Hopkins River Photopoint Site One

Active Photopoint 06-12-2012 - 17-11-2022
Small cleared area located on the western side of the river mouth.
Photos 351

Recent Events

Event Details
14-10-2022 Water level

high water level @ Site 2 - River Boat Cruise pontoon, unable to do observations, due to water inflow up stream and high tides @ estuary mouth 

14-10-2022 18:20
14-10-2022 18:20
14-10-2022 18:20
View all events

Estuary Snapshots

The EstuaryWatch snapshots provide a summary of estuary condition on a particular day. For all EstuaryWatch Snapshots, photopoint photos and a longitudinal water quality profile from the estuary mouth  to the inland extent is displayed. Read more

Full estuary snapshots below use dates where samples at every active monitoring site were recorded. View full and partial snapshots

Autumn 2023

Summer 2023

Spring 2022

Winter 2022

Autumn 2022

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